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LT1115_1

Ultralow Noise, Low Distortion, Audio Op Amp

Linear Technology 

ELECTRICAL CHARACTERISTICS VS = ±18V, TA = 25°C, unless otherwise noted.

SYMBOL

CMRR

PSRR

AVOL

PARAMETER

Common Mode Rejection

Ratio

Power Supply Rejection

Ratio

Large-Signal Voltage Gain

VOUT

Maximum Output Voltage

Swing

SR

Slew Rate

GBW

Gain-Bandwidth Product

Zo

Open Loop 0utput Impedance

IS

Supply Current

CONDITIONS

VCM = ±13.5V

VS = ±4V to ±19V

RL ≥ 2kΩ, Vo = ±14.5V

RL ≥ 1kΩ, Vo = ±13V

RL ≥ 600Ω, Vo = ±10V

No Load

RL ≥ 2kΩ

RL ≥ 600Ω

AVCL = –1

fo = 20kHz (Note 4)

Vo = 0, Io = 0

MIN

104

104

2.0

1.5

1.0

±15.5

±14.5

±11.0

10

40

TYP

123

126

20

15

10

±16.5

±15.5

±14.5

15

70

70

8.5

LT1115

MAX

UNITS

dB

dB

V/µV

V/µV

V/µV

V

V

V

V/µs

MHz

Ω

11.5

mA

The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.

VS = ±18V, unless otherwise noted.

SYMBOL

VOS

∆VOS/∆T

IOS

IB

CMRR

PSRR

AVOL

VOUT

PARAMETER

Input Offset Voltage

Average Input Offset Drift

Input Offset Current

Input Bias Current

Input Voltage Range

Common Mode Rejection

Ratio

Power Supply Rejection

Ratio

Large-Signal Voltage Gain

Maximum Output Voltage

Swing

IS

Supply Current

CONDITIONS

(Note 2)

VCM = 0V

VCM = 0V

VCM = ±13V

VS = ±4.5V to ±18V

RL ≥ 2kΩ, Vo = ±13V

RL ≥ 1kΩ, Vo = ±11V

No Load

RL ≥ 2kΩ

RL ≥ 600Ω

MIN

●

●

●

●

±13

●

100

TYP

75

0.5

40

±70

±14.8

120

●

100

123

●

1.5

15

1.0

10

±15

±16.3

●

±13.8

±15.3

±10

±14.3

●

9.3

MAX

280

300

±550

13

UNITS

µV

µV/°C

nA

nA

V

dB

dB

V/µV

V/µV

V

V

V

mA

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: Input Offset Voltage measurements are performed by automatic

test equipment approximately 0.5 sec after application of power.

Note 3: Current noise is defined and measured with balanced source

resistors. The resultant voltage noise (after subtracting the resistor noise

on an RMS basis) is divided by the sum of the two source resistors to

obtain current noise.

Note 4: Gain-bandwidth product is not tested. It is guaranteed by design

and by inference from the slew rate measurement.

Note 5: The inputs are protected by back-to-back diodes. Current limiting

resistors are not used in order to achieve low noise. If differential input

voltage exceeds ±1.8V, the input current should be limited to 25mA.

1115fa

3

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